1028677840 has 40 divisors (see below), whose sum is σ = 2408908320. Its totient is φ = 408506496.

The previous prime is 1028677817. The next prime is 1028677883. The reversal of 1028677840 is 487768201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35134 + ... + 57373.

It is an arithmetic number, because the mean of its divisors is an integer number (60222708).

Almost surely, 2^1028677840 is an apocalyptic number.

1028677840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028677840 is an abundant number, since it is smaller than the sum of its proper divisors (1380230480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028677840 is a wasteful number, since it uses less digits than its factorization.

1028677840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92659 (or 92653 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1028677840 is about 32073.0079662011. The cubic root of 1028677840 is about 1009.4693287799.

The spelling of 1028677840 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, eight hundred forty".